Draft chamber



FIG. 1 is a front perspective view of a draft chamber of the presentinvention;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

The broken lines shown in FIGS. 3 and 8 represent unclaimed subjectmatter and form no part of the claimed design.

CLAIM I claim the ornamental design for a draft chamber, as shown anddescribed.